Engine-intake heater.



H. C. HIATT.

ENGlNE INTAKE HEATER. APPLlcATIoN HLED Nov.21. 1915.

Patented Feb. 6, 1917.

C. EITT, DE BLISS, OKLHOM..

fENGNE-LEN HEATER.

Speoileetion of Letters Peteur.

Application filed November 27, 1915. Serial No. 63,786.

To aZZ uflom may concern:

Pe it lino that l, Hoeren C. llfrn'rr, e citizen or" *he United Stnies, residing as Bliss, inv the county el Noble und State or" lrls'f home., have invented new and useful llinprovenients in Engine-intake Heaters, of which the followingis a speciiioation.

This invention relates to fuel heaters, the object in view being o provide e device oi" the class referred to which is in the nature of an attachmentto the intake pipe or manifold of en intern-el combustion engine, the same serving "to thoroughly heet the .enplof sive mixture nt s point between the carbu' reter and the combustion chamber of the cylinder or cylinders whereby economy is efected in the consumption of fuel oil, the

rapid accumulation of carbon prevented end higher efliciency of the engine obtained.

A further object of the invention is to provide in conjunction with such hee-ter, ineens for releasing' exploding?r mixture in case of back fire from the engine. lilith the shove and other objects in View, the invention con-z siste in the .novel construction, combination and arrangementY of pers, es herein described, illustrated and claimed. ln the accompanying' drnwingszmlfigure il. is u longitudinz'il section through the intslte heater of this invention, showing cer tain parts in elevation. Fig. 2 is a cross section on the line 2-2 of Fig. l.

Referring to the drawings, i designates the intake pipe of en internal -combnstion engine which, in carrying out the present invention, is divided to form sections vl and l the ends of which ere located in spaced i relation to each other andihreaded to r ceive the opposiely located internally threain ed heads 2 and an outer shell or cylindrical heater body e which is shown as provided ndjnceni, to one end thereof with an exhaust inleil 5 and et the opposite side :ind neer the opposite end thereof with an exhaust ourlet (i, rhe body d and the heads 2 end 3 enged as shown and fastened together by belles 7 or the equivalent thereof.

Extending centrally and longitudinally of the outer shell is an inside tuhuler shell 8 which contains a stationery spiral delleeizor 9 resembling an enger bit in shape, the said `deilector 9 being secured in a stationery position within the shell 8 by any suitable means such, for example, as by making the denector 9 of such external diameter es y.5.o fit tightly against the inner Wall of the s1 ell remmen ren. e, reir.. i'

8. 'lhe shell 8 is fastened at it oppositcferztremit-ies to the end Wells of the outer shell s so that the exhaust gases cannot obtein entrance to the shell 8.

The pipe l adjacent to the receiving end of the shell fl is formed with an outlet 10 which is normally closed by an externe-Hy arranged valve 1l held tightly to its seat by Ineens of a coiled'expansion springr ein circling the stem i3 or' the valve l1, the stem passing through a suitable guide 14 iirredly attached to the pipe 1. In case of back fire, the valve 11 automatically opens to nlloW the expanding mixture to be liberated to the atmosphere without reaching the cerhureter.

By means of the construction and sr'- rangement above described, the explosive mixture which is ordinarily cold as it is drawn t rough the intake pipe, isv thoroughly heated before reaching the combustion chamber or chambers of the engine and theL particles of fuel oil are thoroughly agitated und broken up, and the mixture veporized. lt will, of course, be understood that the exhaust pipe (not shown) is also divided so that the heater body 4 may be incorporaced therein. Thus the heat of the exhaust gases from the engine is utilized for heating the incoming mixture. The invention is particularly valuable when used in conjunction with kerosene orother fuel oils of a.

lower grade than gasolene which is at present so universally used. although the device will also effect a considerable economy in the consumption of gasolene and also by producing a better mixture and heating the sameadd to the eliiciency of the engine and also reduce the rapid accumulation of cia-rbon within. the combustion chemberl or chambers of the engine.

Having thus described my inventioml clainn- A heater of the class specified, comprisn ing an outer tubular shell having 'leef-inle; end outlell openings adjacent'to the opposite ends thereof, an inside tubular shell of less external diameter than the inbernl diameter of the outer shell and concentric therewith, heads at opposite endsI of the outer and inner shells leaving an annular exhaust circulation space between the outer and inner shells, said heads heiner centrally extended outwardly and bored to receive vthe opposite extremities of said inside shell und also to receive pipe inlet and outlet eonnerlons, and a lixed spiral deflector within said inner shell. ln

In testimon whereof I alliX my signature in presi-nee el' two witnesses.

lAYMoxn IC. YoUNo. 

